Physics Letters B (Sep 2023)
Unbinned deep learning jet substructure measurement in high Q2 ep collisions at HERA
- V. Andreev,
- M. Arratia,
- A. Baghdasaryan,
- A. Baty,
- K. Begzsuren,
- A. Bolz,
- V. Boudry,
- G. Brandt,
- D. Britzger,
- A. Buniatyan,
- L. Bystritskaya,
- A.J. Campbell,
- K.B. Cantun Avila,
- K. Cerny,
- V. Chekelian,
- Z. Chen,
- J.G. Contreras,
- J. Cvach,
- J.B. Dainton,
- K. Daum,
- A. Deshpande,
- C. Diaconu,
- A. Drees,
- G. Eckerlin,
- S. Egli,
- E. Elsen,
- L. Favart,
- A. Fedotov,
- J. Feltesse,
- M. Fleischer,
- A. Fomenko,
- C. Gal,
- J. Gayler,
- L. Goerlich,
- N. Gogitidze,
- M. Gouzevitch,
- C. Grab,
- T. Greenshaw,
- G. Grindhammer,
- D. Haidt,
- R.C.W. Henderson,
- J. Hessler,
- J. Hladký,
- D. Hoffmann,
- R. Horisberger,
- T. Hreus,
- F. Huber,
- P.M. Jacobs,
- M. Jacquet,
- T. Janssen,
- A.W. Jung,
- J. Katzy,
- C. Kiesling,
- M. Klein,
- C. Kleinwort,
- H.T. Klest,
- R. Kogler,
- P. Kostka,
- J. Kretzschmar,
- D. Krücker,
- K. Krüger,
- M.P.J. Landon,
- W. Lange,
- P. Laycock,
- S.H. Lee,
- S. Levonian,
- W. Li,
- J. Lin,
- K. Lipka,
- B. List,
- J. List,
- B. Lobodzinski,
- O.R. Long,
- E. Malinovski,
- H.-U. Martyn,
- S.J. Maxfield,
- A. Mehta,
- A.B. Meyer,
- J. Meyer,
- S. Mikocki,
- V.M. Mikuni,
- M.M. Mondal,
- K. Müller,
- B. Nachman,
- Th. Naumann,
- P.R. Newman,
- C. Niebuhr,
- G. Nowak,
- J.E. Olsson,
- D. Ozerov,
- S. Park,
- C. Pascaud,
- G.D. Patel,
- E. Perez,
- A. Petrukhin,
- I. Picuric,
- D. Pitzl,
- R. Polifka,
- S. Preins,
- V. Radescu,
- N. Raicevic,
- T. Ravdandorj,
- P. Reimer,
- E. Rizvi,
- P. Robmann,
- R. Roosen,
- A. Rostovtsev,
- M. Rotaru,
- D.P.C. Sankey,
- M. Sauter,
- E. Sauvan,
- S. Schmitt,
- B.A. Schmookler,
- G. Schnell,
- L. Schoeffel,
- A. Schöning,
- F. Sefkow,
- S. Shushkevich,
- Y. Soloviev,
- P. Sopicki,
- D. South,
- A. Specka,
- M. Steder,
- B. Stella,
- U. Straumann,
- C. Sun,
- T. Sykora,
- P.D. Thompson,
- F. Torales Acosta,
- D. Traynor,
- B. Tseepeldorj,
- Z. Tu,
- G. Tustin,
- A. Valkárová,
- C. Vallée,
- P. Van Mechelen,
- D. Wegener,
- E. Wünsch,
- J. Žáček,
- J. Zhang,
- Z. Zhang,
- R. Žlebčík,
- H. Zohrabyan,
- F. Zomer
Affiliations
- V. Andreev
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- M. Arratia
- University of California, Riverside, CA 92521, USA
- A. Baghdasaryan
- Yerevan Physics Institute, Yerevan, Armenia
- A. Baty
- Rice University, Houston, TX 77005-1827, USA
- K. Begzsuren
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
- A. Bolz
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- V. Boudry
- LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
- G. Brandt
- II. Physikalisches Institut, Universität Göttingen, Göttingen, Germany
- D. Britzger
- Max-Planck-Institut für Physik, München, Germany
- A. Buniatyan
- School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom33 Supported by the UK Science and Technology Facilities Council, and formerly by the UK Particle Physics and Astronomy Research Council.
- L. Bystritskaya
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- A.J. Campbell
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- K.B. Cantun Avila
- Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán, Mexico99 Supported by CONACYT, México, grant 48778-F.
- K. Cerny
- Joint Laboratory of Optics, Palacký University, Olomouc, Czech Republic
- V. Chekelian
- Max-Planck-Institut für Physik, München, Germany
- Z. Chen
- Shandong University, Shandong, PR China
- J.G. Contreras
- Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán, Mexico99 Supported by CONACYT, México, grant 48778-F.
- J. Cvach
- Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic88 Supported by the Ministry of Education of the Czech Republic under the project INGO-LG14033.
- J.B. Dainton
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- K. Daum
- Fachbereich C, Universität Wuppertal, Wuppertal, Germany
- A. Deshpande
- Stony Brook University, Stony Brook, NY 11794, USA1; Brookhaven National Laboratory, Upton, NY 11973, USA
- C. Diaconu
- Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
- A. Drees
- Stony Brook University, Stony Brook, NY 11794, USA1
- G. Eckerlin
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- S. Egli
- Paul Scherrer Institut, Villigen, Switzerland
- E. Elsen
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- L. Favart
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium22 Supported by FNRS-FWO-Vlaanderen, IISN-IIKW and IWT and by Interuniversity Attraction Poles Programme, Belgian Science Policy.
- A. Fedotov
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- J. Feltesse
- IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
- M. Fleischer
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- A. Fomenko
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- C. Gal
- Stony Brook University, Stony Brook, NY 11794, USA1
- J. Gayler
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- L. Goerlich
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland66 Partially supported by Polish Ministry of Science and Higher Education, grant DPN/N168/DESY/2009.
- N. Gogitidze
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- M. Gouzevitch
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- C. Grab
- Institut für Teilchenphysik, ETH, Zürich, Switzerland1010 Supported by the Swiss National Science Foundation.
- T. Greenshaw
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- G. Grindhammer
- Max-Planck-Institut für Physik, München, Germany
- D. Haidt
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- R.C.W. Henderson
- Department of Physics, University of Lancaster, Lancaster, United Kingdom3
- J. Hessler
- Max-Planck-Institut für Physik, München, Germany
- J. Hladký
- Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic88 Supported by the Ministry of Education of the Czech Republic under the project INGO-LG14033.
- D. Hoffmann
- Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
- R. Horisberger
- Paul Scherrer Institut, Villigen, Switzerland
- T. Hreus
- Physik-Institut der Universität Zürich, Zürich, Switzerland10
- F. Huber
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany5
- P.M. Jacobs
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA1
- M. Jacquet
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, Orsay, France
- T. Janssen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium22 Supported by FNRS-FWO-Vlaanderen, IISN-IIKW and IWT and by Interuniversity Attraction Poles Programme, Belgian Science Policy.
- A.W. Jung
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
- J. Katzy
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- C. Kiesling
- Max-Planck-Institut für Physik, München, Germany
- M. Klein
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- C. Kleinwort
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- H.T. Klest
- Stony Brook University, Stony Brook, NY 11794, USA1
- R. Kogler
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- P. Kostka
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- J. Kretzschmar
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- D. Krücker
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- K. Krüger
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- M.P.J. Landon
- School of Physics and Astronomy, Queen Mary, University of London, London, United Kingdom3
- W. Lange
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- P. Laycock
- Brookhaven National Laboratory, Upton, NY 11973, USA
- S.H. Lee
- University of Michigan, Ann Arbor, MI 48109, USA11 Supported by the U.S. DOE Office of Science.
- S. Levonian
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- W. Li
- Rice University, Houston, TX 77005-1827, USA
- J. Lin
- Rice University, Houston, TX 77005-1827, USA
- K. Lipka
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- B. List
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- J. List
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- B. Lobodzinski
- Max-Planck-Institut für Physik, München, Germany
- O.R. Long
- University of California, Riverside, CA 92521, USA
- E. Malinovski
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- H.-U. Martyn
- I. Physikalisches Institut der RWTH, Aachen, Germany
- S.J. Maxfield
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- A. Mehta
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- A.B. Meyer
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- J. Meyer
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- S. Mikocki
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland66 Partially supported by Polish Ministry of Science and Higher Education, grant DPN/N168/DESY/2009.
- V.M. Mikuni
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA1
- M.M. Mondal
- Stony Brook University, Stony Brook, NY 11794, USA1
- K. Müller
- Physik-Institut der Universität Zürich, Zürich, Switzerland10
- B. Nachman
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA1
- Th. Naumann
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- P.R. Newman
- School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom33 Supported by the UK Science and Technology Facilities Council, and formerly by the UK Particle Physics and Astronomy Research Council.
- C. Niebuhr
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- G. Nowak
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland66 Partially supported by Polish Ministry of Science and Higher Education, grant DPN/N168/DESY/2009.
- J.E. Olsson
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- D. Ozerov
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- S. Park
- Stony Brook University, Stony Brook, NY 11794, USA1
- C. Pascaud
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, Orsay, France
- G.D. Patel
- Department of Physics, University of Liverpool, Liverpool, United Kingdom3
- E. Perez
- CERN, Geneva, Switzerland
- A. Petrukhin
- Fakultät IV – Department für Physik, Universität Siegen, Siegen, Germany
- I. Picuric
- Faculty of Science, University of Montenegro, Podgorica, Montenegro77 Partially supported by Ministry of Science of Montenegro, no. 05-1/3-3352.
- D. Pitzl
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- R. Polifka
- Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic8
- S. Preins
- University of California, Riverside, CA 92521, USA
- V. Radescu
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany5
- N. Raicevic
- Faculty of Science, University of Montenegro, Podgorica, Montenegro77 Partially supported by Ministry of Science of Montenegro, no. 05-1/3-3352.
- T. Ravdandorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
- P. Reimer
- Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic88 Supported by the Ministry of Education of the Czech Republic under the project INGO-LG14033.
- E. Rizvi
- School of Physics and Astronomy, Queen Mary, University of London, London, United Kingdom3
- P. Robmann
- Physik-Institut der Universität Zürich, Zürich, Switzerland10
- R. Roosen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium22 Supported by FNRS-FWO-Vlaanderen, IISN-IIKW and IWT and by Interuniversity Attraction Poles Programme, Belgian Science Policy.
- A. Rostovtsev
- Affiliated with an institute covered by a current or former collaboration agreement with DESY
- M. Rotaru
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania44 Supported by the Romanian National Authority for Scientific Research under the contract PN 09370101.
- D.P.C. Sankey
- STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire, United Kingdom3
- M. Sauter
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany5
- E. Sauvan
- Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France; LAPP, Université de Savoie, CNRS/IN2P3, Annecy-le-Vieux, France
- S. Schmitt
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany; Corresponding author.
- B.A. Schmookler
- Stony Brook University, Stony Brook, NY 11794, USA1
- G. Schnell
- Department of Physics, University of the Basque Country UPV/EHU, 48080 Bilbao, Spain
- L. Schoeffel
- IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
- A. Schöning
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany5
- F. Sefkow
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- S. Shushkevich
- Max-Planck-Institut für Physik, München, Germany
- Y. Soloviev
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- P. Sopicki
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland66 Partially supported by Polish Ministry of Science and Higher Education, grant DPN/N168/DESY/2009.
- D. South
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- A. Specka
- LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
- M. Steder
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- B. Stella
- Dipartimento di Fisica Università di Roma Tre and INFN Roma 3, Roma, Italy
- U. Straumann
- Physik-Institut der Universität Zürich, Zürich, Switzerland10
- C. Sun
- Stony Brook University, Stony Brook, NY 11794, USA1
- T. Sykora
- Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic8
- P.D. Thompson
- School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom33 Supported by the UK Science and Technology Facilities Council, and formerly by the UK Particle Physics and Astronomy Research Council.
- F. Torales Acosta
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA1
- D. Traynor
- School of Physics and Astronomy, Queen Mary, University of London, London, United Kingdom3
- B. Tseepeldorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia; Ulaanbaatar University, Ulaanbaatar, Mongolia
- Z. Tu
- Brookhaven National Laboratory, Upton, NY 11973, USA
- G. Tustin
- Stony Brook University, Stony Brook, NY 11794, USA1
- A. Valkárová
- Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic8
- C. Vallée
- Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
- P. Van Mechelen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium22 Supported by FNRS-FWO-Vlaanderen, IISN-IIKW and IWT and by Interuniversity Attraction Poles Programme, Belgian Science Policy.
- D. Wegener
- Institut für Physik, TU Dortmund, Dortmund, Germany55 Supported by the Bundesministerium für Bildung und Forschung, FRG, under contract numbers 05H09GUF, 05H09VHC, 05H09VHF, 05H16PEA.
- E. Wünsch
- Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
- J. Žáček
- Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic8
- J. Zhang
- Shandong University, Shandong, PR China
- Z. Zhang
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, Orsay, France
- R. Žlebčík
- Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic8
- H. Zohrabyan
- Yerevan Physics Institute, Yerevan, Armenia
- F. Zomer
- IJCLab, Université Paris-Saclay, CNRS/IN2P3, Orsay, France
- Journal volume & issue
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Vol. 844
p. 138101
Abstract
The radiation pattern within high energy quark- and gluon-initiated jets (jet substructure) is used extensively as a precision probe of the strong force as well as an environment for optimizing event generators with numerous applications in high energy particle and nuclear physics. Looking at electron-proton collisions is of particular interest as many of the complications present at hadron colliders are absent. A detailed study of modern jet substructure observables, jet angularities, in electron-proton collisions is presented using data recorded using the H1 detector at HERA. The measurement is unbinned and multi-dimensional, using machine learning to correct for detector effects. All of the available reconstructed object information of the respective jets is interpreted by a graph neural network, achieving superior precision on a selected set of jet angularities. Training these networks was enabled by the use of a large number of GPUs in the Perlmutter supercomputer at Berkeley Lab. The particle jets are reconstructed in the laboratory frame, using the kT jet clustering algorithm. Results are reported at high transverse momentum transfer Q2>150GeV2, and inelasticity 0.2<y<0.7. The analysis is also performed in sub-regions of Q2, thus probing scale dependencies of the substructure variables. The data are compared with a variety of predictions and point towards possible improvements of such models.
